Finding the Third Proportional to 98,422.50 and 209,148

Step by Step Solution

1. Step 1: Write the proportion equation
   98,422.50 : 209,148 = 209,148 : x
2. Step 2: Convert to fraction form
   98,422.50/209,148 = 209,148/x
3. Step 3: Cross multiply
   98,422.50x = 209,148 × 209,148
4. Step 4: Simplify right side
   98,422.50x = 43,742,885,904
5. Step 5: Solve for x
   x = 43,742,885,904/98,422.50
6. Step 6: Final answer
   x = 444,439.90