Finding the Third Proportional to 57,069 and 85,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,069 : 85,288.50 = 85,288.50 : x
2. Step 2: Convert to fraction form
   57,069/85,288.50 = 85,288.50/x
3. Step 3: Cross multiply
   57,069x = 85,288.50 × 85,288.50
4. Step 4: Simplify right side
   57,069x = 7,274,128,232.25
5. Step 5: Solve for x
   x = 7,274,128,232.25/57,069
6. Step 6: Final answer
   x = 127,461.99