Finding the Third Proportional to 93,990 and 205,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   93,990 : 205,129.50 = 205,129.50 : x
2. Step 2: Convert to fraction form
   93,990/205,129.50 = 205,129.50/x
3. Step 3: Cross multiply
   93,990x = 205,129.50 × 205,129.50
4. Step 4: Simplify right side
   93,990x = 42,078,111,770.25
5. Step 5: Solve for x
   x = 42,078,111,770.25/93,990
6. Step 6: Final answer
   x = 447,687.11