Finding the Third Proportional to 10,123,218 and 21,782,709

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123,218 : 21,782,709 = 21,782,709 : x
2. Step 2: Convert to fraction form
   10,123,218/21,782,709 = 21,782,709/x
3. Step 3: Cross multiply
   10,123,218x = 21,782,709 × 21,782,709
4. Step 4: Simplify right side
   10,123,218x = 474,486,411,378,681
5. Step 5: Solve for x
   x = 474,486,411,378,681/10,123,218
6. Step 6: Final answer
   x = 46,871,104.76