Finding the Third Proportional to 8,218,939.50 and 13,089,485.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,218,939.50 : 13,089,485.25 = 13,089,485.25 : x
2. Step 2: Convert to fraction form
   8,218,939.50/13,089,485.25 = 13,089,485.25/x
3. Step 3: Cross multiply
   8,218,939.50x = 13,089,485.25 × 13,089,485.25
4. Step 4: Simplify right side
   8,218,939.50x = 171,334,624,109,967.56
5. Step 5: Solve for x
   x = 171,334,624,109,967.56/8,218,939.50
6. Step 6: Final answer
   x = 20,846,317.72