Finding the Third Proportional to 400,114 and 619,340

Step by Step Solution

1. Step 1: Write the proportion equation
   400,114 : 619,340 = 619,340 : x
2. Step 2: Convert to fraction form
   400,114/619,340 = 619,340/x
3. Step 3: Cross multiply
   400,114x = 619,340 × 619,340
4. Step 4: Simplify right side
   400,114x = 383,582,035,600
5. Step 5: Solve for x
   x = 383,582,035,600/400,114
6. Step 6: Final answer
   x = 958,681.86