Finding the Third Proportional to 40,398.75 and 53,308.13

Step by Step Solution

1. Step 1: Write the proportion equation
   40,398.75 : 53,308.13 = 53,308.13 : x
2. Step 2: Convert to fraction form
   40,398.75/53,308.13 = 53,308.13/x
3. Step 3: Cross multiply
   40,398.75x = 53,308.13 × 53,308.13
4. Step 4: Simplify right side
   40,398.75x = 2,841,756,191.02
5. Step 5: Solve for x
   x = 2,841,756,191.02/40,398.75
6. Step 6: Final answer
   x = 70,342.68