Finding the Third Proportional to 11,480,679,688 and 17,970,399,345

Step by Step Solution

1. Step 1: Write the proportion equation
   11,480,679,688 : 17,970,399,345 = 17,970,399,345 : x
2. Step 2: Convert to fraction form
   11,480,679,688/17,970,399,345 = 17,970,399,345/x
3. Step 3: Cross multiply
   11,480,679,688x = 17,970,399,345 × 17,970,399,345
4. Step 4: Simplify right side
   11,480,679,688x = 322,935,252,618,776,412,160
5. Step 5: Solve for x
   x = 322,935,252,618,776,412,160/11,480,679,688
6. Step 6: Final answer
   x = 28,128,583,097.42