Finding the Third Proportional to 642,316 and 1,399,024

Step by Step Solution

1. Step 1: Write the proportion equation
   642,316 : 1,399,024 = 1,399,024 : x
2. Step 2: Convert to fraction form
   642,316/1,399,024 = 1,399,024/x
3. Step 3: Cross multiply
   642,316x = 1,399,024 × 1,399,024
4. Step 4: Simplify right side
   642,316x = 1,957,268,152,576
5. Step 5: Solve for x
   x = 1,957,268,152,576/642,316
6. Step 6: Final answer
   x = 3,047,204.42