Finding the Third Proportional to 59,143,312 and 129,435,788

Step by Step Solution

1. Step 1: Write the proportion equation
   59,143,312 : 129,435,788 = 129,435,788 : x
2. Step 2: Convert to fraction form
   59,143,312/129,435,788 = 129,435,788/x
3. Step 3: Cross multiply
   59,143,312x = 129,435,788 × 129,435,788
4. Step 4: Simplify right side
   59,143,312x = 16,753,623,215,180,944
5. Step 5: Solve for x
   x = 16,753,623,215,180,944/59,143,312
6. Step 6: Final answer
   x = 283,271,643.89