Finding the Third Proportional to 345,384 and 771,066

Step by Step Solution

1. Step 1: Write the proportion equation
   345,384 : 771,066 = 771,066 : x
2. Step 2: Convert to fraction form
   345,384/771,066 = 771,066/x
3. Step 3: Cross multiply
   345,384x = 771,066 × 771,066
4. Step 4: Simplify right side
   345,384x = 594,542,776,356
5. Step 5: Solve for x
   x = 594,542,776,356/345,384
6. Step 6: Final answer
   x = 1,721,396.41