Finding the Third Proportional to 99,260 and 216,366.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,260 : 216,366.50 = 216,366.50 : x
2. Step 2: Convert to fraction form
   99,260/216,366.50 = 216,366.50/x
3. Step 3: Cross multiply
   99,260x = 216,366.50 × 216,366.50
4. Step 4: Simplify right side
   99,260x = 46,814,462,322.25
5. Step 5: Solve for x
   x = 46,814,462,322.25/99,260
6. Step 6: Final answer
   x = 471,634.72