Finding the Third Proportional to 75,775.50 and 90,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   75,775.50 : 90,355.50 = 90,355.50 : x
2. Step 2: Convert to fraction form
   75,775.50/90,355.50 = 90,355.50/x
3. Step 3: Cross multiply
   75,775.50x = 90,355.50 × 90,355.50
4. Step 4: Simplify right side
   75,775.50x = 8,164,116,380.25
5. Step 5: Solve for x
   x = 8,164,116,380.25/75,775.50
6. Step 6: Final answer
   x = 107,740.84