Finding the Third Proportional to 623,680 and 1,347,140

Step by Step Solution

1. Step 1: Write the proportion equation
   623,680 : 1,347,140 = 1,347,140 : x
2. Step 2: Convert to fraction form
   623,680/1,347,140 = 1,347,140/x
3. Step 3: Cross multiply
   623,680x = 1,347,140 × 1,347,140
4. Step 4: Simplify right side
   623,680x = 1,814,786,179,600
5. Step 5: Solve for x
   x = 1,814,786,179,600/623,680
6. Step 6: Final answer
   x = 2,909,803.39