Finding the Third Proportional to 5,687,386,889 and 12,364,693,863

Step by Step Solution

1. Step 1: Write the proportion equation
   5,687,386,889 : 12,364,693,863 = 12,364,693,863 : x
2. Step 2: Convert to fraction form
   5,687,386,889/12,364,693,863 = 12,364,693,863/x
3. Step 3: Cross multiply
   5,687,386,889x = 12,364,693,863 × 12,364,693,863
4. Step 4: Simplify right side
   5,687,386,889x = 152,885,654,325,709,864,960
5. Step 5: Solve for x
   x = 152,885,654,325,709,864,960/5,687,386,889
6. Step 6: Final answer
   x = 26,881,528,777.55