Finding the Third Proportional to 8,218,941 and 13,089,487.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,218,941 : 13,089,487.50 = 13,089,487.50 : x
2. Step 2: Convert to fraction form
   8,218,941/13,089,487.50 = 13,089,487.50/x
3. Step 3: Cross multiply
   8,218,941x = 13,089,487.50 × 13,089,487.50
4. Step 4: Simplify right side
   8,218,941x = 171,334,683,012,656.25
5. Step 5: Solve for x
   x = 171,334,683,012,656.25/8,218,941
6. Step 6: Final answer
   x = 20,846,321.08