Finding the Third Proportional to 42,079.50 and 70,125.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,079.50 : 70,125.75 = 70,125.75 : x
2. Step 2: Convert to fraction form
   42,079.50/70,125.75 = 70,125.75/x
3. Step 3: Cross multiply
   42,079.50x = 70,125.75 × 70,125.75
4. Step 4: Simplify right side
   42,079.50x = 4,917,620,813.06
5. Step 5: Solve for x
   x = 4,917,620,813.06/42,079.50
6. Step 6: Final answer
   x = 116,865.00