Finding the Third Proportional to 8,218,935 and 13,089,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,218,935 : 13,089,478.50 = 13,089,478.50 : x
2. Step 2: Convert to fraction form
   8,218,935/13,089,478.50 = 13,089,478.50/x
3. Step 3: Cross multiply
   8,218,935x = 13,089,478.50 × 13,089,478.50
4. Step 4: Simplify right side
   8,218,935x = 171,334,447,401,962.25
5. Step 5: Solve for x
   x = 171,334,447,401,962.25/8,218,935
6. Step 6: Final answer
   x = 20,846,307.63