Finding the Third Proportional to 870,860,301,537 and 1,210,861,640,196

Step by Step Solution

1. Step 1: Write the proportion equation
   870,860,301,537 : 1,210,861,640,196 = 1,210,861,640,196 : x
2. Step 2: Convert to fraction form
   870,860,301,537/1,210,861,640,196 = 1,210,861,640,196/x
3. Step 3: Cross multiply
   870,860,301,537x = 1,210,861,640,196 × 1,210,861,640,196
4. Step 4: Simplify right side
   870,860,301,537x = 1,466,185,911,698,147,371,909,120
5. Step 5: Solve for x
   x = 1,466,185,911,698,147,371,909,120/870,860,301,537
6. Step 6: Final answer
   x = 1,683,606,324,815.18