Finding the Third Proportional to 70,630.50 and 99,018

Step by Step Solution

1. Step 1: Write the proportion equation
   70,630.50 : 99,018 = 99,018 : x
2. Step 2: Convert to fraction form
   70,630.50/99,018 = 99,018/x
3. Step 3: Cross multiply
   70,630.50x = 99,018 × 99,018
4. Step 4: Simplify right side
   70,630.50x = 9,804,564,324
5. Step 5: Solve for x
   x = 9,804,564,324/70,630.50
6. Step 6: Final answer
   x = 138,814.88