Finding the Third Proportional to 99,817.50 and 146,806.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,817.50 : 146,806.50 = 146,806.50 : x
2. Step 2: Convert to fraction form
   99,817.50/146,806.50 = 146,806.50/x
3. Step 3: Cross multiply
   99,817.50x = 146,806.50 × 146,806.50
4. Step 4: Simplify right side
   99,817.50x = 21,552,148,442.25
5. Step 5: Solve for x
   x = 21,552,148,442.25/99,817.50
6. Step 6: Final answer
   x = 215,915.53