Finding the Third Proportional to 1,338,112 and 2,870,272

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,112 : 2,870,272 = 2,870,272 : x
2. Step 2: Convert to fraction form
   1,338,112/2,870,272 = 2,870,272/x
3. Step 3: Cross multiply
   1,338,112x = 2,870,272 × 2,870,272
4. Step 4: Simplify right side
   1,338,112x = 8,238,461,353,984
5. Step 5: Solve for x
   x = 8,238,461,353,984/1,338,112
6. Step 6: Final answer
   x = 6,156,780.12