Finding the Third Proportional to 59,118,760 and 138,128,099

Step by Step Solution

1. Step 1: Write the proportion equation
   59,118,760 : 138,128,099 = 138,128,099 : x
2. Step 2: Convert to fraction form
   59,118,760/138,128,099 = 138,128,099/x
3. Step 3: Cross multiply
   59,118,760x = 138,128,099 × 138,128,099
4. Step 4: Simplify right side
   59,118,760x = 19,079,371,733,353,800
5. Step 5: Solve for x
   x = 19,079,371,733,353,800/59,118,760
6. Step 6: Final answer
   x = 322,729,565.60