Finding the Third Proportional to 31,199,314.50 and 69,568,155

Step by Step Solution

1. Step 1: Write the proportion equation
   31,199,314.50 : 69,568,155 = 69,568,155 : x
2. Step 2: Convert to fraction form
   31,199,314.50/69,568,155 = 69,568,155/x
3. Step 3: Cross multiply
   31,199,314.50x = 69,568,155 × 69,568,155
4. Step 4: Simplify right side
   31,199,314.50x = 4,839,728,190,104,025
5. Step 5: Solve for x
   x = 4,839,728,190,104,025/31,199,314.50
6. Step 6: Final answer
   x = 155,122,901.50