Finding the Third Proportional to 19,966,860 and 28,533,123

Step by Step Solution

1. Step 1: Write the proportion equation
   19,966,860 : 28,533,123 = 28,533,123 : x
2. Step 2: Convert to fraction form
   19,966,860/28,533,123 = 28,533,123/x
3. Step 3: Cross multiply
   19,966,860x = 28,533,123 × 28,533,123
4. Step 4: Simplify right side
   19,966,860x = 814,139,108,133,129
5. Step 5: Solve for x
   x = 814,139,108,133,129/19,966,860
6. Step 6: Final answer
   x = 40,774,518.78