Finding the Third Proportional to 434,487 and 908,695.50

Step by Step Solution

1. Step 1: Write the proportion equation
   434,487 : 908,695.50 = 908,695.50 : x
2. Step 2: Convert to fraction form
   434,487/908,695.50 = 908,695.50/x
3. Step 3: Cross multiply
   434,487x = 908,695.50 × 908,695.50
4. Step 4: Simplify right side
   434,487x = 825,727,511,720.25
5. Step 5: Solve for x
   x = 825,727,511,720.25/434,487
6. Step 6: Final answer
   x = 1,900,465.40