Finding the Third Proportional to 147,356 and 321,700

Step by Step Solution

1. Step 1: Write the proportion equation
   147,356 : 321,700 = 321,700 : x
2. Step 2: Convert to fraction form
   147,356/321,700 = 321,700/x
3. Step 3: Cross multiply
   147,356x = 321,700 × 321,700
4. Step 4: Simplify right side
   147,356x = 103,490,890,000
5. Step 5: Solve for x
   x = 103,490,890,000/147,356
6. Step 6: Final answer
   x = 702,318.81