Finding the Third Proportional to 9,774,678 and 21,063,123

Step by Step Solution

1. Step 1: Write the proportion equation
   9,774,678 : 21,063,123 = 21,063,123 : x
2. Step 2: Convert to fraction form
   9,774,678/21,063,123 = 21,063,123/x
3. Step 3: Cross multiply
   9,774,678x = 21,063,123 × 21,063,123
4. Step 4: Simplify right side
   9,774,678x = 443,655,150,513,129
5. Step 5: Solve for x
   x = 443,655,150,513,129/9,774,678
6. Step 6: Final answer
   x = 45,388,211.31