Finding the Third Proportional to 64,431.78 and 141,566.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,431.78 : 141,566.25 = 141,566.25 : x
2. Step 2: Convert to fraction form
   64,431.78/141,566.25 = 141,566.25/x
3. Step 3: Cross multiply
   64,431.78x = 141,566.25 × 141,566.25
4. Step 4: Simplify right side
   64,431.78x = 20,041,002,309.57
5. Step 5: Solve for x
   x = 20,041,002,309.57/64,431.78
6. Step 6: Final answer
   x = 311,042.18