Finding the Third Proportional to 149,316.50 and 322,386

Step by Step Solution

1. Step 1: Write the proportion equation
   149,316.50 : 322,386 = 322,386 : x
2. Step 2: Convert to fraction form
   149,316.50/322,386 = 322,386/x
3. Step 3: Cross multiply
   149,316.50x = 322,386 × 322,386
4. Step 4: Simplify right side
   149,316.50x = 103,932,732,996
5. Step 5: Solve for x
   x = 103,932,732,996/149,316.50
6. Step 6: Final answer
   x = 696,056.58