Finding the Third Proportional to 57,394.13 and 90,492.89

Step by Step Solution

1. Step 1: Write the proportion equation
   57,394.13 : 90,492.89 = 90,492.89 : x
2. Step 2: Convert to fraction form
   57,394.13/90,492.89 = 90,492.89/x
3. Step 3: Cross multiply
   57,394.13x = 90,492.89 × 90,492.89
4. Step 4: Simplify right side
   57,394.13x = 8,188,963,253.67
5. Step 5: Solve for x
   x = 8,188,963,253.67/57,394.13
6. Step 6: Final answer
   x = 142,679.47