Finding the Third Proportional to 148,366.69 and 217,621.69

Step by Step Solution

1. Step 1: Write the proportion equation
   148,366.69 : 217,621.69 = 217,621.69 : x
2. Step 2: Convert to fraction form
   148,366.69/217,621.69 = 217,621.69/x
3. Step 3: Cross multiply
   148,366.69x = 217,621.69 × 217,621.69
4. Step 4: Simplify right side
   148,366.69x = 47,359,198,870.35
5. Step 5: Solve for x
   x = 47,359,198,870.35/148,366.69
6. Step 6: Final answer
   x = 319,203.72