Finding the Third Proportional to 99,603 and 147,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,603 : 147,622.50 = 147,622.50 : x
2. Step 2: Convert to fraction form
   99,603/147,622.50 = 147,622.50/x
3. Step 3: Cross multiply
   99,603x = 147,622.50 × 147,622.50
4. Step 4: Simplify right side
   99,603x = 21,792,402,506.25
5. Step 5: Solve for x
   x = 21,792,402,506.25/99,603
6. Step 6: Final answer
   x = 218,792.63