Finding the Third Proportional to 98,961.50 and 207,642

Step by Step Solution

1. Step 1: Write the proportion equation
   98,961.50 : 207,642 = 207,642 : x
2. Step 2: Convert to fraction form
   98,961.50/207,642 = 207,642/x
3. Step 3: Cross multiply
   98,961.50x = 207,642 × 207,642
4. Step 4: Simplify right side
   98,961.50x = 43,115,200,164
5. Step 5: Solve for x
   x = 43,115,200,164/98,961.50
6. Step 6: Final answer
   x = 435,676.50