Finding the Third Proportional to 12,728,919 and 28,338,940

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728,919 : 28,338,940 = 28,338,940 : x
2. Step 2: Convert to fraction form
   12,728,919/28,338,940 = 28,338,940/x
3. Step 3: Cross multiply
   12,728,919x = 28,338,940 × 28,338,940
4. Step 4: Simplify right side
   12,728,919x = 803,095,520,323,600
5. Step 5: Solve for x
   x = 803,095,520,323,600/12,728,919
6. Step 6: Final answer
   x = 63,092,201.33