Finding the Third Proportional to 57,775.50 and 77,278.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,775.50 : 77,278.50 = 77,278.50 : x
2. Step 2: Convert to fraction form
   57,775.50/77,278.50 = 77,278.50/x
3. Step 3: Cross multiply
   57,775.50x = 77,278.50 × 77,278.50
4. Step 4: Simplify right side
   57,775.50x = 5,971,966,562.25
5. Step 5: Solve for x
   x = 5,971,966,562.25/57,775.50
6. Step 6: Final answer
   x = 103,365.03