Finding the Third Proportional to 11,812,985.50 and 18,531,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,812,985.50 : 18,531,086.50 = 18,531,086.50 : x
2. Step 2: Convert to fraction form
   11,812,985.50/18,531,086.50 = 18,531,086.50/x
3. Step 3: Cross multiply
   11,812,985.50x = 18,531,086.50 × 18,531,086.50
4. Step 4: Simplify right side
   11,812,985.50x = 343,401,166,870,482.25
5. Step 5: Solve for x
   x = 343,401,166,870,482.25/11,812,985.50
6. Step 6: Final answer
   x = 29,069,803.47