Finding the Third Proportional to 231,642 and 348,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   231,642 : 348,019.50 = 348,019.50 : x
2. Step 2: Convert to fraction form
   231,642/348,019.50 = 348,019.50/x
3. Step 3: Cross multiply
   231,642x = 348,019.50 × 348,019.50
4. Step 4: Simplify right side
   231,642x = 121,117,572,380.25
5. Step 5: Solve for x
   x = 121,117,572,380.25/231,642
6. Step 6: Final answer
   x = 522,865.34