Finding the Third Proportional to 420,885.50 and 920,503

Step by Step Solution

1. Step 1: Write the proportion equation
   420,885.50 : 920,503 = 920,503 : x
2. Step 2: Convert to fraction form
   420,885.50/920,503 = 920,503/x
3. Step 3: Cross multiply
   420,885.50x = 920,503 × 920,503
4. Step 4: Simplify right side
   420,885.50x = 847,325,773,009
5. Step 5: Solve for x
   x = 847,325,773,009/420,885.50
6. Step 6: Final answer
   x = 2,013,197.82