Finding the Third Proportional to 5,978,265 and 8,388,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978,265 : 8,388,688.50 = 8,388,688.50 : x
2. Step 2: Convert to fraction form
   5,978,265/8,388,688.50 = 8,388,688.50/x
3. Step 3: Cross multiply
   5,978,265x = 8,388,688.50 × 8,388,688.50
4. Step 4: Simplify right side
   5,978,265x = 70,370,094,750,032.25
5. Step 5: Solve for x
   x = 70,370,094,750,032.25/5,978,265
6. Step 6: Final answer
   x = 11,770,989.53