Finding the Third Proportional to 99,068 and 216,200

Step by Step Solution

1. Step 1: Write the proportion equation
   99,068 : 216,200 = 216,200 : x
2. Step 2: Convert to fraction form
   99,068/216,200 = 216,200/x
3. Step 3: Cross multiply
   99,068x = 216,200 × 216,200
4. Step 4: Simplify right side
   99,068x = 46,742,440,000
5. Step 5: Solve for x
   x = 46,742,440,000/99,068
6. Step 6: Final answer
   x = 471,821.78