Finding the Third Proportional to 40,612.50 and 65,430.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,612.50 : 65,430.50 = 65,430.50 : x
2. Step 2: Convert to fraction form
   40,612.50/65,430.50 = 65,430.50/x
3. Step 3: Cross multiply
   40,612.50x = 65,430.50 × 65,430.50
4. Step 4: Simplify right side
   40,612.50x = 4,281,150,330.25
5. Step 5: Solve for x
   x = 4,281,150,330.25/40,612.50
6. Step 6: Final answer
   x = 105,414.60