Finding the Third Proportional to 12,661,657.50 and 25,770,786

Step by Step Solution

1. Step 1: Write the proportion equation
   12,661,657.50 : 25,770,786 = 25,770,786 : x
2. Step 2: Convert to fraction form
   12,661,657.50/25,770,786 = 25,770,786/x
3. Step 3: Cross multiply
   12,661,657.50x = 25,770,786 × 25,770,786
4. Step 4: Simplify right side
   12,661,657.50x = 664,133,411,057,796
5. Step 5: Solve for x
   x = 664,133,411,057,796/12,661,657.50
6. Step 6: Final answer
   x = 52,452,327.91