Finding the Third Proportional to 5,218,670 and 10,584,076

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218,670 : 10,584,076 = 10,584,076 : x
2. Step 2: Convert to fraction form
   5,218,670/10,584,076 = 10,584,076/x
3. Step 3: Cross multiply
   5,218,670x = 10,584,076 × 10,584,076
4. Step 4: Simplify right side
   5,218,670x = 112,022,664,773,776
5. Step 5: Solve for x
   x = 112,022,664,773,776/5,218,670
6. Step 6: Final answer
   x = 21,465,749.85