Finding the Third Proportional to 38,721.38 and 54,526.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,721.38 : 54,526.50 = 54,526.50 : x
2. Step 2: Convert to fraction form
   38,721.38/54,526.50 = 54,526.50/x
3. Step 3: Cross multiply
   38,721.38x = 54,526.50 × 54,526.50
4. Step 4: Simplify right side
   38,721.38x = 2,973,139,202.25
5. Step 5: Solve for x
   x = 2,973,139,202.25/38,721.38
6. Step 6: Final answer
   x = 76,782.89