Finding the Third Proportional to 420,842.25 and 901,503

Step by Step Solution

1. Step 1: Write the proportion equation
   420,842.25 : 901,503 = 901,503 : x
2. Step 2: Convert to fraction form
   420,842.25/901,503 = 901,503/x
3. Step 3: Cross multiply
   420,842.25x = 901,503 × 901,503
4. Step 4: Simplify right side
   420,842.25x = 812,707,659,009
5. Step 5: Solve for x
   x = 812,707,659,009/420,842.25
6. Step 6: Final answer
   x = 1,931,145.60