Finding the Third Proportional to 643,380 and 1,375,096

Step by Step Solution

1. Step 1: Write the proportion equation
   643,380 : 1,375,096 = 1,375,096 : x
2. Step 2: Convert to fraction form
   643,380/1,375,096 = 1,375,096/x
3. Step 3: Cross multiply
   643,380x = 1,375,096 × 1,375,096
4. Step 4: Simplify right side
   643,380x = 1,890,889,009,216
5. Step 5: Solve for x
   x = 1,890,889,009,216/643,380
6. Step 6: Final answer
   x = 2,938,992.52