Finding the Third Proportional to 12,081,208,218 and 28,478,767,146

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081,208,218 : 28,478,767,146 = 28,478,767,146 : x
2. Step 2: Convert to fraction form
   12,081,208,218/28,478,767,146 = 28,478,767,146/x
3. Step 3: Cross multiply
   12,081,208,218x = 28,478,767,146 × 28,478,767,146
4. Step 4: Simplify right side
   12,081,208,218x = 811,040,178,156,088,983,552
5. Step 5: Solve for x
   x = 811,040,178,156,088,983,552/12,081,208,218
6. Step 6: Final answer
   x = 67,132,373,146.89