Finding the Third Proportional to 45,289.13 and 99,166.78

Step by Step Solution

1. Step 1: Write the proportion equation
   45,289.13 : 99,166.78 = 99,166.78 : x
2. Step 2: Convert to fraction form
   45,289.13/99,166.78 = 99,166.78/x
3. Step 3: Cross multiply
   45,289.13x = 99,166.78 × 99,166.78
4. Step 4: Simplify right side
   45,289.13x = 9,834,050,503.49
5. Step 5: Solve for x
   x = 9,834,050,503.49/45,289.13
6. Step 6: Final answer
   x = 217,139.34