Finding the Third Proportional to 31,199,322 and 69,568,170

Step by Step Solution

1. Step 1: Write the proportion equation
   31,199,322 : 69,568,170 = 69,568,170 : x
2. Step 2: Convert to fraction form
   31,199,322/69,568,170 = 69,568,170/x
3. Step 3: Cross multiply
   31,199,322x = 69,568,170 × 69,568,170
4. Step 4: Simplify right side
   31,199,322x = 4,839,730,277,148,900
5. Step 5: Solve for x
   x = 4,839,730,277,148,900/31,199,322
6. Step 6: Final answer
   x = 155,122,931.11