Finding the Third Proportional to 103,126.50 and 216,630

Step by Step Solution

1. Step 1: Write the proportion equation
   103,126.50 : 216,630 = 216,630 : x
2. Step 2: Convert to fraction form
   103,126.50/216,630 = 216,630/x
3. Step 3: Cross multiply
   103,126.50x = 216,630 × 216,630
4. Step 4: Simplify right side
   103,126.50x = 46,928,556,900
5. Step 5: Solve for x
   x = 46,928,556,900/103,126.50
6. Step 6: Final answer
   x = 455,058.18