Finding the Third Proportional to 420,120 and 921,874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   420,120 : 921,874.50 = 921,874.50 : x
2. Step 2: Convert to fraction form
   420,120/921,874.50 = 921,874.50/x
3. Step 3: Cross multiply
   420,120x = 921,874.50 × 921,874.50
4. Step 4: Simplify right side
   420,120x = 849,852,593,750.25
5. Step 5: Solve for x
   x = 849,852,593,750.25/420,120
6. Step 6: Final answer
   x = 2,022,880.59