Finding the Third Proportional to 39,507 and 57,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,507 : 57,700.50 = 57,700.50 : x
2. Step 2: Convert to fraction form
   39,507/57,700.50 = 57,700.50/x
3. Step 3: Cross multiply
   39,507x = 57,700.50 × 57,700.50
4. Step 4: Simplify right side
   39,507x = 3,329,347,700.25
5. Step 5: Solve for x
   x = 3,329,347,700.25/39,507
6. Step 6: Final answer
   x = 84,272.35