Finding the Third Proportional to 77,498.75 and 109,690.88

Step by Step Solution

1. Step 1: Write the proportion equation
   77,498.75 : 109,690.88 = 109,690.88 : x
2. Step 2: Convert to fraction form
   77,498.75/109,690.88 = 109,690.88/x
3. Step 3: Cross multiply
   77,498.75x = 109,690.88 × 109,690.88
4. Step 4: Simplify right side
   77,498.75x = 12,032,088,058.27
5. Step 5: Solve for x
   x = 12,032,088,058.27/77,498.75
6. Step 6: Final answer
   x = 155,255.25