Finding the Third Proportional to 619,600 and 1,355,840

Step by Step Solution

1. Step 1: Write the proportion equation
   619,600 : 1,355,840 = 1,355,840 : x
2. Step 2: Convert to fraction form
   619,600/1,355,840 = 1,355,840/x
3. Step 3: Cross multiply
   619,600x = 1,355,840 × 1,355,840
4. Step 4: Simplify right side
   619,600x = 1,838,302,105,600
5. Step 5: Solve for x
   x = 1,838,302,105,600/619,600
6. Step 6: Final answer
   x = 2,966,917.54