Finding the Third Proportional to 81,961,877.25 and 124,621,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,961,877.25 : 124,621,105.50 = 124,621,105.50 : x
2. Step 2: Convert to fraction form
   81,961,877.25/124,621,105.50 = 124,621,105.50/x
3. Step 3: Cross multiply
   81,961,877.25x = 124,621,105.50 × 124,621,105.50
4. Step 4: Simplify right side
   81,961,877.25x = 15,530,419,936,042,130
5. Step 5: Solve for x
   x = 15,530,419,936,042,130/81,961,877.25
6. Step 6: Final answer
   x = 189,483,458.13