Finding the Third Proportional to 57,240.75 and 84,145.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,240.75 : 84,145.88 = 84,145.88 : x
2. Step 2: Convert to fraction form
   57,240.75/84,145.88 = 84,145.88/x
3. Step 3: Cross multiply
   57,240.75x = 84,145.88 × 84,145.88
4. Step 4: Simplify right side
   57,240.75x = 7,080,528,279.52
5. Step 5: Solve for x
   x = 7,080,528,279.52/57,240.75
6. Step 6: Final answer
   x = 123,697.34