Finding the Third Proportional to 70,644.38 and 99,007.88

Step by Step Solution

1. Step 1: Write the proportion equation
   70,644.38 : 99,007.88 = 99,007.88 : x
2. Step 2: Convert to fraction form
   70,644.38/99,007.88 = 99,007.88/x
3. Step 3: Cross multiply
   70,644.38x = 99,007.88 × 99,007.88
4. Step 4: Simplify right side
   70,644.38x = 9,802,559,312.02
5. Step 5: Solve for x
   x = 9,802,559,312.02/70,644.38
6. Step 6: Final answer
   x = 138,759.23