Finding the Third Proportional to 57,478.50 and 79,374.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,478.50 : 79,374.75 = 79,374.75 : x
2. Step 2: Convert to fraction form
   57,478.50/79,374.75 = 79,374.75/x
3. Step 3: Cross multiply
   57,478.50x = 79,374.75 × 79,374.75
4. Step 4: Simplify right side
   57,478.50x = 6,300,350,937.56
5. Step 5: Solve for x
   x = 6,300,350,937.56/57,478.50
6. Step 6: Final answer
   x = 109,612.31