Finding the Third Proportional to 7,970,836.50 and 12,689,345.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,970,836.50 : 12,689,345.25 = 12,689,345.25 : x
2. Step 2: Convert to fraction form
   7,970,836.50/12,689,345.25 = 12,689,345.25/x
3. Step 3: Cross multiply
   7,970,836.50x = 12,689,345.25 × 12,689,345.25
4. Step 4: Simplify right side
   7,970,836.50x = 161,019,482,873,697.56
5. Step 5: Solve for x
   x = 161,019,482,873,697.56/7,970,836.50
6. Step 6: Final answer
   x = 20,201,077.12