Finding the Third Proportional to 31,264,672 and 67,876,832

Step by Step Solution

1. Step 1: Write the proportion equation
   31,264,672 : 67,876,832 = 67,876,832 : x
2. Step 2: Convert to fraction form
   31,264,672/67,876,832 = 67,876,832/x
3. Step 3: Cross multiply
   31,264,672x = 67,876,832 × 67,876,832
4. Step 4: Simplify right side
   31,264,672x = 4,607,264,322,356,224
5. Step 5: Solve for x
   x = 4,607,264,322,356,224/31,264,672
6. Step 6: Final answer
   x = 147,363,270.67