Finding the Third Proportional to 8,616,991.50 and 13,342,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,616,991.50 : 13,342,819.50 = 13,342,819.50 : x
2. Step 2: Convert to fraction form
   8,616,991.50/13,342,819.50 = 13,342,819.50/x
3. Step 3: Cross multiply
   8,616,991.50x = 13,342,819.50 × 13,342,819.50
4. Step 4: Simplify right side
   8,616,991.50x = 178,030,832,209,580.25
5. Step 5: Solve for x
   x = 178,030,832,209,580.25/8,616,991.50
6. Step 6: Final answer
   x = 20,660,439.58