Finding the Third Proportional to 103,030.50 and 217,131

Step by Step Solution

1. Step 1: Write the proportion equation
   103,030.50 : 217,131 = 217,131 : x
2. Step 2: Convert to fraction form
   103,030.50/217,131 = 217,131/x
3. Step 3: Cross multiply
   103,030.50x = 217,131 × 217,131
4. Step 4: Simplify right side
   103,030.50x = 47,145,871,161
5. Step 5: Solve for x
   x = 47,145,871,161/103,030.50
6. Step 6: Final answer
   x = 457,591.40