Finding the Third Proportional to 3,658,309.31 and 7,878,505.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658,309.31 : 7,878,505.50 = 7,878,505.50 : x
2. Step 2: Convert to fraction form
   3,658,309.31/7,878,505.50 = 7,878,505.50/x
3. Step 3: Cross multiply
   3,658,309.31x = 7,878,505.50 × 7,878,505.50
4. Step 4: Simplify right side
   3,658,309.31x = 62,070,848,913,530.25
5. Step 5: Solve for x
   x = 62,070,848,913,530.25/3,658,309.31
6. Step 6: Final answer
   x = 16,967,086.05