Finding the Third Proportional to 392,998 and 588,889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,998 : 588,889.50 = 588,889.50 : x
2. Step 2: Convert to fraction form
   392,998/588,889.50 = 588,889.50/x
3. Step 3: Cross multiply
   392,998x = 588,889.50 × 588,889.50
4. Step 4: Simplify right side
   392,998x = 346,790,843,210.25
5. Step 5: Solve for x
   x = 346,790,843,210.25/392,998
6. Step 6: Final answer
   x = 882,423.94