Finding the Third Proportional to 10,989,405 and 16,154,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989,405 : 16,154,842.50 = 16,154,842.50 : x
2. Step 2: Convert to fraction form
   10,989,405/16,154,842.50 = 16,154,842.50/x
3. Step 3: Cross multiply
   10,989,405x = 16,154,842.50 × 16,154,842.50
4. Step 4: Simplify right side
   10,989,405x = 260,978,936,199,806.25
5. Step 5: Solve for x
   x = 260,978,936,199,806.25/10,989,405
6. Step 6: Final answer
   x = 23,748,231.70