Finding the Third Proportional to 72,112,077.50 and 146,772,640

Step by Step Solution

1. Step 1: Write the proportion equation
   72,112,077.50 : 146,772,640 = 146,772,640 : x
2. Step 2: Convert to fraction form
   72,112,077.50/146,772,640 = 146,772,640/x
3. Step 3: Cross multiply
   72,112,077.50x = 146,772,640 × 146,772,640
4. Step 4: Simplify right side
   72,112,077.50x = 21,542,207,852,569,600
5. Step 5: Solve for x
   x = 21,542,207,852,569,600/72,112,077.50
6. Step 6: Final answer
   x = 298,732,315.02