Finding the Third Proportional to 643,726 and 1,413,476

Step by Step Solution

1. Step 1: Write the proportion equation
   643,726 : 1,413,476 = 1,413,476 : x
2. Step 2: Convert to fraction form
   643,726/1,413,476 = 1,413,476/x
3. Step 3: Cross multiply
   643,726x = 1,413,476 × 1,413,476
4. Step 4: Simplify right side
   643,726x = 1,997,914,402,576
5. Step 5: Solve for x
   x = 1,997,914,402,576/643,726
6. Step 6: Final answer
   x = 3,103,672.06