Finding the Third Proportional to 128,310,718,462 and 267,180,870,180

Step by Step Solution

1. Step 1: Write the proportion equation
   128,310,718,462 : 267,180,870,180 = 267,180,870,180 : x
2. Step 2: Convert to fraction form
   128,310,718,462/267,180,870,180 = 267,180,870,180/x
3. Step 3: Cross multiply
   128,310,718,462x = 267,180,870,180 × 267,180,870,180
4. Step 4: Simplify right side
   128,310,718,462x = 71,385,617,390,142,016,716,800
5. Step 5: Solve for x
   x = 71,385,617,390,142,016,716,800/128,310,718,462
6. Step 6: Final answer
   x = 556,349,603,881.95