Finding the Third Proportional to 420,300 and 912,045

Step by Step Solution

1. Step 1: Write the proportion equation
   420,300 : 912,045 = 912,045 : x
2. Step 2: Convert to fraction form
   420,300/912,045 = 912,045/x
3. Step 3: Cross multiply
   420,300x = 912,045 × 912,045
4. Step 4: Simplify right side
   420,300x = 831,826,082,025
5. Step 5: Solve for x
   x = 831,826,082,025/420,300
6. Step 6: Final answer
   x = 1,979,124.63