Finding the Third Proportional to 31,774,672 and 67,886,976

Step by Step Solution

1. Step 1: Write the proportion equation
   31,774,672 : 67,886,976 = 67,886,976 : x
2. Step 2: Convert to fraction form
   31,774,672/67,886,976 = 67,886,976/x
3. Step 3: Cross multiply
   31,774,672x = 67,886,976 × 67,886,976
4. Step 4: Simplify right side
   31,774,672x = 4,608,641,510,424,576
5. Step 5: Solve for x
   x = 4,608,641,510,424,576/31,774,672
6. Step 6: Final answer
   x = 145,041,355.91