Finding the Third Proportional to 31,152,828 and 68,178,408

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152,828 : 68,178,408 = 68,178,408 : x
2. Step 2: Convert to fraction form
   31,152,828/68,178,408 = 68,178,408/x
3. Step 3: Cross multiply
   31,152,828x = 68,178,408 × 68,178,408
4. Step 4: Simplify right side
   31,152,828x = 4,648,295,317,414,464
5. Step 5: Solve for x
   x = 4,648,295,317,414,464/31,152,828
6. Step 6: Final answer
   x = 149,209,417.44