Finding the Third Proportional to 12,929,423 and 28,128,895

Step by Step Solution

1. Step 1: Write the proportion equation
   12,929,423 : 28,128,895 = 28,128,895 : x
2. Step 2: Convert to fraction form
   12,929,423/28,128,895 = 28,128,895/x
3. Step 3: Cross multiply
   12,929,423x = 28,128,895 × 28,128,895
4. Step 4: Simplify right side
   12,929,423x = 791,234,733,921,025
5. Step 5: Solve for x
   x = 791,234,733,921,025/12,929,423
6. Step 6: Final answer
   x = 61,196,445.81