Finding the Third Proportional to 619,876 and 1,357,688

Step by Step Solution

1. Step 1: Write the proportion equation
   619,876 : 1,357,688 = 1,357,688 : x
2. Step 2: Convert to fraction form
   619,876/1,357,688 = 1,357,688/x
3. Step 3: Cross multiply
   619,876x = 1,357,688 × 1,357,688
4. Step 4: Simplify right side
   619,876x = 1,843,316,705,344
5. Step 5: Solve for x
   x = 1,843,316,705,344/619,876
6. Step 6: Final answer
   x = 2,973,686.20