Finding the Third Proportional to 39,867.19 and 74,722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,867.19 : 74,722.50 = 74,722.50 : x
2. Step 2: Convert to fraction form
   39,867.19/74,722.50 = 74,722.50/x
3. Step 3: Cross multiply
   39,867.19x = 74,722.50 × 74,722.50
4. Step 4: Simplify right side
   39,867.19x = 5,583,452,006.25
5. Step 5: Solve for x
   x = 5,583,452,006.25/39,867.19
6. Step 6: Final answer
   x = 140,051.31