Finding the Third Proportional to 61,701,077,647 and 86,888,713,756

Step by Step Solution

1. Step 1: Write the proportion equation
   61,701,077,647 : 86,888,713,756 = 86,888,713,756 : x
2. Step 2: Convert to fraction form
   61,701,077,647/86,888,713,756 = 86,888,713,756/x
3. Step 3: Cross multiply
   61,701,077,647x = 86,888,713,756 × 86,888,713,756
4. Step 4: Simplify right side
   61,701,077,647x = 7,549,648,578,172,103,426,048
5. Step 5: Solve for x
   x = 7,549,648,578,172,103,426,048/61,701,077,647
6. Step 6: Final answer
   x = 122,358,455,736.62