Finding the Third Proportional to 99,104.50 and 206,417

Step by Step Solution

1. Step 1: Write the proportion equation
   99,104.50 : 206,417 = 206,417 : x
2. Step 2: Convert to fraction form
   99,104.50/206,417 = 206,417/x
3. Step 3: Cross multiply
   99,104.50x = 206,417 × 206,417
4. Step 4: Simplify right side
   99,104.50x = 42,607,977,889
5. Step 5: Solve for x
   x = 42,607,977,889/99,104.50
6. Step 6: Final answer
   x = 429,929.80