Finding the Third Proportional to 412,290 and 886,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   412,290 : 886,909.50 = 886,909.50 : x
2. Step 2: Convert to fraction form
   412,290/886,909.50 = 886,909.50/x
3. Step 3: Cross multiply
   412,290x = 886,909.50 × 886,909.50
4. Step 4: Simplify right side
   412,290x = 786,608,461,190.25
5. Step 5: Solve for x
   x = 786,608,461,190.25/412,290
6. Step 6: Final answer
   x = 1,907,900.90