Finding the Third Proportional to 8,559,378 and 13,296,123

Step by Step Solution

1. Step 1: Write the proportion equation
   8,559,378 : 13,296,123 = 13,296,123 : x
2. Step 2: Convert to fraction form
   8,559,378/13,296,123 = 13,296,123/x
3. Step 3: Cross multiply
   8,559,378x = 13,296,123 × 13,296,123
4. Step 4: Simplify right side
   8,559,378x = 176,786,886,831,129
5. Step 5: Solve for x
   x = 176,786,886,831,129/8,559,378
6. Step 6: Final answer
   x = 20,654,174.50