Finding the Third Proportional to 42,380.50 and 57,492.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,380.50 : 57,492.75 = 57,492.75 : x
2. Step 2: Convert to fraction form
   42,380.50/57,492.75 = 57,492.75/x
3. Step 3: Cross multiply
   42,380.50x = 57,492.75 × 57,492.75
4. Step 4: Simplify right side
   42,380.50x = 3,305,416,302.56
5. Step 5: Solve for x
   x = 3,305,416,302.56/42,380.50
6. Step 6: Final answer
   x = 77,993.80