Finding the Third Proportional to 3,109,986 and 4,638,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109,986 : 4,638,009.50 = 4,638,009.50 : x
2. Step 2: Convert to fraction form
   3,109,986/4,638,009.50 = 4,638,009.50/x
3. Step 3: Cross multiply
   3,109,986x = 4,638,009.50 × 4,638,009.50
4. Step 4: Simplify right side
   3,109,986x = 21,511,132,122,090.25
5. Step 5: Solve for x
   x = 21,511,132,122,090.25/3,109,986
6. Step 6: Final answer
   x = 6,916,793.88