Finding the Third Proportional to 392,985 and 588,870

Step by Step Solution

1. Step 1: Write the proportion equation
   392,985 : 588,870 = 588,870 : x
2. Step 2: Convert to fraction form
   392,985/588,870 = 588,870/x
3. Step 3: Cross multiply
   392,985x = 588,870 × 588,870
4. Step 4: Simplify right side
   392,985x = 346,767,876,900
5. Step 5: Solve for x
   x = 346,767,876,900/392,985
6. Step 6: Final answer
   x = 882,394.69