Finding the Third Proportional to 12,187,089.25 and 18,931,407.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,187,089.25 : 18,931,407.50 = 18,931,407.50 : x
2. Step 2: Convert to fraction form
   12,187,089.25/18,931,407.50 = 18,931,407.50/x
3. Step 3: Cross multiply
   12,187,089.25x = 18,931,407.50 × 18,931,407.50
4. Step 4: Simplify right side
   12,187,089.25x = 358,398,189,931,056.25
5. Step 5: Solve for x
   x = 358,398,189,931,056.25/12,187,089.25
6. Step 6: Final answer
   x = 29,408,022.09