Finding the Third Proportional to 12,218,467.50 and 18,116,275.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,218,467.50 : 18,116,275.50 = 18,116,275.50 : x
2. Step 2: Convert to fraction form
   12,218,467.50/18,116,275.50 = 18,116,275.50/x
3. Step 3: Cross multiply
   12,218,467.50x = 18,116,275.50 × 18,116,275.50
4. Step 4: Simplify right side
   12,218,467.50x = 328,199,437,991,900.25
5. Step 5: Solve for x
   x = 328,199,437,991,900.25/12,218,467.50
6. Step 6: Final answer
   x = 26,860,933.09