Finding the Third Proportional to 148,360.50 and 321,345

Step by Step Solution

1. Step 1: Write the proportion equation
   148,360.50 : 321,345 = 321,345 : x
2. Step 2: Convert to fraction form
   148,360.50/321,345 = 321,345/x
3. Step 3: Cross multiply
   148,360.50x = 321,345 × 321,345
4. Step 4: Simplify right side
   148,360.50x = 103,262,609,025
5. Step 5: Solve for x
   x = 103,262,609,025/148,360.50
6. Step 6: Final answer
   x = 696,024.95