Finding the Third Proportional to 42,687.50 and 70,786

Step by Step Solution

1. Step 1: Write the proportion equation
   42,687.50 : 70,786 = 70,786 : x
2. Step 2: Convert to fraction form
   42,687.50/70,786 = 70,786/x
3. Step 3: Cross multiply
   42,687.50x = 70,786 × 70,786
4. Step 4: Simplify right side
   42,687.50x = 5,010,657,796
5. Step 5: Solve for x
   x = 5,010,657,796/42,687.50
6. Step 6: Final answer
   x = 117,379.98