Finding the Third Proportional to 243,330 and 325,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243,330 : 325,486.50 = 325,486.50 : x
2. Step 2: Convert to fraction form
   243,330/325,486.50 = 325,486.50/x
3. Step 3: Cross multiply
   243,330x = 325,486.50 × 325,486.50
4. Step 4: Simplify right side
   243,330x = 105,941,461,682.25
5. Step 5: Solve for x
   x = 105,941,461,682.25/243,330
6. Step 6: Final answer
   x = 435,381.83