Finding the Third Proportional to 420,885 and 920,501.88

Step by Step Solution

1. Step 1: Write the proportion equation
   420,885 : 920,501.88 = 920,501.88 : x
2. Step 2: Convert to fraction form
   420,885/920,501.88 = 920,501.88/x
3. Step 3: Cross multiply
   420,885x = 920,501.88 × 920,501.88
4. Step 4: Simplify right side
   420,885x = 847,323,701,878.52
5. Step 5: Solve for x
   x = 847,323,701,878.52/420,885
6. Step 6: Final answer
   x = 2,013,195.30