Finding the Third Proportional to 64,723.50 and 87,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,723.50 : 87,445.50 = 87,445.50 : x
2. Step 2: Convert to fraction form
   64,723.50/87,445.50 = 87,445.50/x
3. Step 3: Cross multiply
   64,723.50x = 87,445.50 × 87,445.50
4. Step 4: Simplify right side
   64,723.50x = 7,646,715,470.25
5. Step 5: Solve for x
   x = 7,646,715,470.25/64,723.50
6. Step 6: Final answer
   x = 118,144.34