Finding the Third Proportional to 646,248 and 1,380,468

Step by Step Solution

1. Step 1: Write the proportion equation
   646,248 : 1,380,468 = 1,380,468 : x
2. Step 2: Convert to fraction form
   646,248/1,380,468 = 1,380,468/x
3. Step 3: Cross multiply
   646,248x = 1,380,468 × 1,380,468
4. Step 4: Simplify right side
   646,248x = 1,905,691,899,024
5. Step 5: Solve for x
   x = 1,905,691,899,024/646,248
6. Step 6: Final answer
   x = 2,948,855.39