Finding the Third Proportional to 6,391,012.50 and 8,989,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,391,012.50 : 8,989,384.50 = 8,989,384.50 : x
2. Step 2: Convert to fraction form
   6,391,012.50/8,989,384.50 = 8,989,384.50/x
3. Step 3: Cross multiply
   6,391,012.50x = 8,989,384.50 × 8,989,384.50
4. Step 4: Simplify right side
   6,391,012.50x = 80,809,033,688,840.25
5. Step 5: Solve for x
   x = 80,809,033,688,840.25/6,391,012.50
6. Step 6: Final answer
   x = 12,644,167.68