Finding the Third Proportional to 31,465,858 and 68,469,188

Step by Step Solution

1. Step 1: Write the proportion equation
   31,465,858 : 68,469,188 = 68,469,188 : x
2. Step 2: Convert to fraction form
   31,465,858/68,469,188 = 68,469,188/x
3. Step 3: Cross multiply
   31,465,858x = 68,469,188 × 68,469,188
4. Step 4: Simplify right side
   31,465,858x = 4,688,029,705,379,344
5. Step 5: Solve for x
   x = 4,688,029,705,379,344/31,465,858
6. Step 6: Final answer
   x = 148,987,823.74