Finding the Third Proportional to 139,834.50 and 298,350

Step by Step Solution

1. Step 1: Write the proportion equation
   139,834.50 : 298,350 = 298,350 : x
2. Step 2: Convert to fraction form
   139,834.50/298,350 = 298,350/x
3. Step 3: Cross multiply
   139,834.50x = 298,350 × 298,350
4. Step 4: Simplify right side
   139,834.50x = 89,012,722,500
5. Step 5: Solve for x
   x = 89,012,722,500/139,834.50
6. Step 6: Final answer
   x = 636,557.66