Finding the Third Proportional to 221,659.50 and 334,131

Step by Step Solution

1. Step 1: Write the proportion equation
   221,659.50 : 334,131 = 334,131 : x
2. Step 2: Convert to fraction form
   221,659.50/334,131 = 334,131/x
3. Step 3: Cross multiply
   221,659.50x = 334,131 × 334,131
4. Step 4: Simplify right side
   221,659.50x = 111,643,525,161
5. Step 5: Solve for x
   x = 111,643,525,161/221,659.50
6. Step 6: Final answer
   x = 503,671.28