Finding the Third Proportional to 78,490,023,636 and 117,706,207,878

Step by Step Solution

1. Step 1: Write the proportion equation
   78,490,023,636 : 117,706,207,878 = 117,706,207,878 : x
2. Step 2: Convert to fraction form
   78,490,023,636/117,706,207,878 = 117,706,207,878/x
3. Step 3: Cross multiply
   78,490,023,636x = 117,706,207,878 × 117,706,207,878
4. Step 4: Simplify right side
   78,490,023,636x = 13,854,751,373,018,949,222,400
5. Step 5: Solve for x
   x = 13,854,751,373,018,949,222,400/78,490,023,636
6. Step 6: Final answer
   x = 176,516,081,040.70