Finding the Third Proportional to 12,515,979 and 25,991,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,515,979 : 25,991,185.50 = 25,991,185.50 : x
2. Step 2: Convert to fraction form
   12,515,979/25,991,185.50 = 25,991,185.50/x
3. Step 3: Cross multiply
   12,515,979x = 25,991,185.50 × 25,991,185.50
4. Step 4: Simplify right side
   12,515,979x = 675,541,723,695,410.25
5. Step 5: Solve for x
   x = 675,541,723,695,410.25/12,515,979
6. Step 6: Final answer
   x = 53,974,341.42