Finding the Third Proportional to 182,404 and 390,039

Step by Step Solution

1. Step 1: Write the proportion equation
   182,404 : 390,039 = 390,039 : x
2. Step 2: Convert to fraction form
   182,404/390,039 = 390,039/x
3. Step 3: Cross multiply
   182,404x = 390,039 × 390,039
4. Step 4: Simplify right side
   182,404x = 152,130,421,521
5. Step 5: Solve for x
   x = 152,130,421,521/182,404
6. Step 6: Final answer
   x = 834,030.07