Finding the Third Proportional to 138,852,359 and 298,601,462

Step by Step Solution

1. Step 1: Write the proportion equation
   138,852,359 : 298,601,462 = 298,601,462 : x
2. Step 2: Convert to fraction form
   138,852,359/298,601,462 = 298,601,462/x
3. Step 3: Cross multiply
   138,852,359x = 298,601,462 × 298,601,462
4. Step 4: Simplify right side
   138,852,359x = 89,162,833,108,537,440
5. Step 5: Solve for x
   x = 89,162,833,108,537,440/138,852,359
6. Step 6: Final answer
   x = 642,141,291.30