Finding the Third Proportional to 45,162 and 72,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,162 : 72,139.50 = 72,139.50 : x
2. Step 2: Convert to fraction form
   45,162/72,139.50 = 72,139.50/x
3. Step 3: Cross multiply
   45,162x = 72,139.50 × 72,139.50
4. Step 4: Simplify right side
   45,162x = 5,204,107,460.25
5. Step 5: Solve for x
   x = 5,204,107,460.25/45,162
6. Step 6: Final answer
   x = 115,232.00