Finding the Third Proportional to 77,915.25 and 111,422.25

Step by Step Solution

1. Step 1: Write the proportion equation
   77,915.25 : 111,422.25 = 111,422.25 : x
2. Step 2: Convert to fraction form
   77,915.25/111,422.25 = 111,422.25/x
3. Step 3: Cross multiply
   77,915.25x = 111,422.25 × 111,422.25
4. Step 4: Simplify right side
   77,915.25x = 12,414,917,795.06
5. Step 5: Solve for x
   x = 12,414,917,795.06/77,915.25
6. Step 6: Final answer
   x = 159,338.74