Finding the Third Proportional to 99,454.50 and 204,649.88

Step by Step Solution

1. Step 1: Write the proportion equation
   99,454.50 : 204,649.88 = 204,649.88 : x
2. Step 2: Convert to fraction form
   99,454.50/204,649.88 = 204,649.88/x
3. Step 3: Cross multiply
   99,454.50x = 204,649.88 × 204,649.88
4. Step 4: Simplify right side
   99,454.50x = 41,881,571,337.52
5. Step 5: Solve for x
   x = 41,881,571,337.52/99,454.50
6. Step 6: Final answer
   x = 421,112.88