Finding the Third Proportional to 70,669.50 and 99,042

Step by Step Solution

1. Step 1: Write the proportion equation
   70,669.50 : 99,042 = 99,042 : x
2. Step 2: Convert to fraction form
   70,669.50/99,042 = 99,042/x
3. Step 3: Cross multiply
   70,669.50x = 99,042 × 99,042
4. Step 4: Simplify right side
   70,669.50x = 9,809,317,764
5. Step 5: Solve for x
   x = 9,809,317,764/70,669.50
6. Step 6: Final answer
   x = 138,805.54