Finding the Third Proportional to 31,383,696 and 67,721,664

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,696 : 67,721,664 = 67,721,664 : x
2. Step 2: Convert to fraction form
   31,383,696/67,721,664 = 67,721,664/x
3. Step 3: Cross multiply
   31,383,696x = 67,721,664 × 67,721,664
4. Step 4: Simplify right side
   31,383,696x = 4,586,223,774,928,896
5. Step 5: Solve for x
   x = 4,586,223,774,928,896/31,383,696
6. Step 6: Final answer
   x = 146,133,959.97