Finding the Third Proportional to 77,051.25 and 112,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,051.25 : 112,909.50 = 112,909.50 : x
2. Step 2: Convert to fraction form
   77,051.25/112,909.50 = 112,909.50/x
3. Step 3: Cross multiply
   77,051.25x = 112,909.50 × 112,909.50
4. Step 4: Simplify right side
   77,051.25x = 12,748,555,190.25
5. Step 5: Solve for x
   x = 12,748,555,190.25/77,051.25
6. Step 6: Final answer
   x = 165,455.53