Finding the Third Proportional to 619,245 and 917,384

Step by Step Solution

1. Step 1: Write the proportion equation
   619,245 : 917,384 = 917,384 : x
2. Step 2: Convert to fraction form
   619,245/917,384 = 917,384/x
3. Step 3: Cross multiply
   619,245x = 917,384 × 917,384
4. Step 4: Simplify right side
   619,245x = 841,593,403,456
5. Step 5: Solve for x
   x = 841,593,403,456/619,245
6. Step 6: Final answer
   x = 1,359,063.70