Finding the Third Proportional to 8,139,390 and 16,948,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,390 : 16,948,616.50 = 16,948,616.50 : x
2. Step 2: Convert to fraction form
   8,139,390/16,948,616.50 = 16,948,616.50/x
3. Step 3: Cross multiply
   8,139,390x = 16,948,616.50 × 16,948,616.50
4. Step 4: Simplify right side
   8,139,390x = 287,255,601,264,072.25
5. Step 5: Solve for x
   x = 287,255,601,264,072.25/8,139,390
6. Step 6: Final answer
   x = 35,292,030.64