Finding the Third Proportional to 100,908 and 216,304.50

Step by Step Solution

1. Step 1: Write the proportion equation
   100,908 : 216,304.50 = 216,304.50 : x
2. Step 2: Convert to fraction form
   100,908/216,304.50 = 216,304.50/x
3. Step 3: Cross multiply
   100,908x = 216,304.50 × 216,304.50
4. Step 4: Simplify right side
   100,908x = 46,787,636,720.25
5. Step 5: Solve for x
   x = 46,787,636,720.25/100,908
6. Step 6: Final answer
   x = 463,666.28