Finding the Third Proportional to 72,558,515 and 157,871,128

Step by Step Solution

1. Step 1: Write the proportion equation
   72,558,515 : 157,871,128 = 157,871,128 : x
2. Step 2: Convert to fraction form
   72,558,515/157,871,128 = 157,871,128/x
3. Step 3: Cross multiply
   72,558,515x = 157,871,128 × 157,871,128
4. Step 4: Simplify right side
   72,558,515x = 24,923,293,055,992,384
5. Step 5: Solve for x
   x = 24,923,293,055,992,384/72,558,515
6. Step 6: Final answer
   x = 343,492,325.55