Finding the Third Proportional to 619,872 and 1,357,680

Step by Step Solution

1. Step 1: Write the proportion equation
   619,872 : 1,357,680 = 1,357,680 : x
2. Step 2: Convert to fraction form
   619,872/1,357,680 = 1,357,680/x
3. Step 3: Cross multiply
   619,872x = 1,357,680 × 1,357,680
4. Step 4: Simplify right side
   619,872x = 1,843,294,982,400
5. Step 5: Solve for x
   x = 1,843,294,982,400/619,872
6. Step 6: Final answer
   x = 2,973,670.34