Finding the Third Proportional to 10,085,386 and 21,021,716

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085,386 : 21,021,716 = 21,021,716 : x
2. Step 2: Convert to fraction form
   10,085,386/21,021,716 = 21,021,716/x
3. Step 3: Cross multiply
   10,085,386x = 21,021,716 × 21,021,716
4. Step 4: Simplify right side
   10,085,386x = 441,912,543,584,656
5. Step 5: Solve for x
   x = 441,912,543,584,656/10,085,386
6. Step 6: Final answer
   x = 43,817,117.52