Finding the Third Proportional to 42,170.25 and 90,592.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,170.25 : 90,592.50 = 90,592.50 : x
2. Step 2: Convert to fraction form
   42,170.25/90,592.50 = 90,592.50/x
3. Step 3: Cross multiply
   42,170.25x = 90,592.50 × 90,592.50
4. Step 4: Simplify right side
   42,170.25x = 8,207,001,056.25
5. Step 5: Solve for x
   x = 8,207,001,056.25/42,170.25
6. Step 6: Final answer
   x = 194,615.90