Finding the Third Proportional to 57,485 and 77,250

Step by Step Solution

1. Step 1: Write the proportion equation
   57,485 : 77,250 = 77,250 : x
2. Step 2: Convert to fraction form
   57,485/77,250 = 77,250/x
3. Step 3: Cross multiply
   57,485x = 77,250 × 77,250
4. Step 4: Simplify right side
   57,485x = 5,967,562,500
5. Step 5: Solve for x
   x = 5,967,562,500/57,485
6. Step 6: Final answer
   x = 103,810.78