Finding the Third Proportional to 159,642 and 247,207.50

Step by Step Solution

1. Step 1: Write the proportion equation
   159,642 : 247,207.50 = 247,207.50 : x
2. Step 2: Convert to fraction form
   159,642/247,207.50 = 247,207.50/x
3. Step 3: Cross multiply
   159,642x = 247,207.50 × 247,207.50
4. Step 4: Simplify right side
   159,642x = 61,111,548,056.25
5. Step 5: Solve for x
   x = 61,111,548,056.25/159,642
6. Step 6: Final answer
   x = 382,803.70