Finding the Third Proportional to 420,753 and 912,840.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,753 : 912,840.50 = 912,840.50 : x
2. Step 2: Convert to fraction form
   420,753/912,840.50 = 912,840.50/x
3. Step 3: Cross multiply
   420,753x = 912,840.50 × 912,840.50
4. Step 4: Simplify right side
   420,753x = 833,277,778,440.25
5. Step 5: Solve for x
   x = 833,277,778,440.25/420,753
6. Step 6: Final answer
   x = 1,980,444.06