Finding the Third Proportional to 5,709,663 and 8,406,784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,709,663 : 8,406,784.50 = 8,406,784.50 : x
2. Step 2: Convert to fraction form
   5,709,663/8,406,784.50 = 8,406,784.50/x
3. Step 3: Cross multiply
   5,709,663x = 8,406,784.50 × 8,406,784.50
4. Step 4: Simplify right side
   5,709,663x = 70,674,025,629,440.25
5. Step 5: Solve for x
   x = 70,674,025,629,440.25/5,709,663
6. Step 6: Final answer
   x = 12,377,967.95