Finding the Third Proportional to 129,123 and 301,788

Step by Step Solution

1. Step 1: Write the proportion equation
   129,123 : 301,788 = 301,788 : x
2. Step 2: Convert to fraction form
   129,123/301,788 = 301,788/x
3. Step 3: Cross multiply
   129,123x = 301,788 × 301,788
4. Step 4: Simplify right side
   129,123x = 91,075,996,944
5. Step 5: Solve for x
   x = 91,075,996,944/129,123
6. Step 6: Final answer
   x = 705,342.94