Finding the Third Proportional to 31,501,672 and 68,381,176

Step by Step Solution

1. Step 1: Write the proportion equation
   31,501,672 : 68,381,176 = 68,381,176 : x
2. Step 2: Convert to fraction form
   31,501,672/68,381,176 = 68,381,176/x
3. Step 3: Cross multiply
   31,501,672x = 68,381,176 × 68,381,176
4. Step 4: Simplify right side
   31,501,672x = 4,675,985,231,142,976
5. Step 5: Solve for x
   x = 4,675,985,231,142,976/31,501,672
6. Step 6: Final answer
   x = 148,436,096.70