Finding the Third Proportional to 72,991.13 and 98,688.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,991.13 : 98,688.38 = 98,688.38 : x
2. Step 2: Convert to fraction form
   72,991.13/98,688.38 = 98,688.38/x
3. Step 3: Cross multiply
   72,991.13x = 98,688.38 × 98,688.38
4. Step 4: Simplify right side
   72,991.13x = 9,739,395,360.14
5. Step 5: Solve for x
   x = 9,739,395,360.14/72,991.13
6. Step 6: Final answer
   x = 133,432.60