Finding the Third Proportional to 60,748.31 and 85,509

Step by Step Solution

1. Step 1: Write the proportion equation
   60,748.31 : 85,509 = 85,509 : x
2. Step 2: Convert to fraction form
   60,748.31/85,509 = 85,509/x
3. Step 3: Cross multiply
   60,748.31x = 85,509 × 85,509
4. Step 4: Simplify right side
   60,748.31x = 7,311,789,081
5. Step 5: Solve for x
   x = 7,311,789,081/60,748.31
6. Step 6: Final answer
   x = 120,362.01