Finding the Third Proportional to 12,146,886 and 18,626,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146,886 : 18,626,314.50 = 18,626,314.50 : x
2. Step 2: Convert to fraction form
   12,146,886/18,626,314.50 = 18,626,314.50/x
3. Step 3: Cross multiply
   12,146,886x = 18,626,314.50 × 18,626,314.50
4. Step 4: Simplify right side
   12,146,886x = 346,939,591,852,910.25
5. Step 5: Solve for x
   x = 346,939,591,852,910.25/12,146,886
6. Step 6: Final answer
   x = 28,562,019.26