Finding the Third Proportional to 58,923,678 and 138,899,496

Step by Step Solution

1. Step 1: Write the proportion equation
   58,923,678 : 138,899,496 = 138,899,496 : x
2. Step 2: Convert to fraction form
   58,923,678/138,899,496 = 138,899,496/x
3. Step 3: Cross multiply
   58,923,678x = 138,899,496 × 138,899,496
4. Step 4: Simplify right side
   58,923,678x = 19,293,069,989,054,016
5. Step 5: Solve for x
   x = 19,293,069,989,054,016/58,923,678
6. Step 6: Final answer
   x = 327,424,740.68