Finding the Third Proportional to 72,019.13 and 103,381.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,019.13 : 103,381.31 = 103,381.31 : x
2. Step 2: Convert to fraction form
   72,019.13/103,381.31 = 103,381.31/x
3. Step 3: Cross multiply
   72,019.13x = 103,381.31 × 103,381.31
4. Step 4: Simplify right side
   72,019.13x = 10,687,695,774.22
5. Step 5: Solve for x
   x = 10,687,695,774.22/72,019.13
6. Step 6: Final answer
   x = 148,400.80