Finding the Third Proportional to 57,353.50 and 85,990.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,353.50 : 85,990.25 = 85,990.25 : x
2. Step 2: Convert to fraction form
   57,353.50/85,990.25 = 85,990.25/x
3. Step 3: Cross multiply
   57,353.50x = 85,990.25 × 85,990.25
4. Step 4: Simplify right side
   57,353.50x = 7,394,323,095.06
5. Step 5: Solve for x
   x = 7,394,323,095.06/57,353.50
6. Step 6: Final answer
   x = 128,925.40