Finding the Third Proportional to 191,446 and 392,444

Step by Step Solution

1. Step 1: Write the proportion equation
   191,446 : 392,444 = 392,444 : x
2. Step 2: Convert to fraction form
   191,446/392,444 = 392,444/x
3. Step 3: Cross multiply
   191,446x = 392,444 × 392,444
4. Step 4: Simplify right side
   191,446x = 154,012,293,136
5. Step 5: Solve for x
   x = 154,012,293,136/191,446
6. Step 6: Final answer
   x = 804,468.59