Finding the Third Proportional to 137,110 and 207,123

Step by Step Solution

1. Step 1: Write the proportion equation
   137,110 : 207,123 = 207,123 : x
2. Step 2: Convert to fraction form
   137,110/207,123 = 207,123/x
3. Step 3: Cross multiply
   137,110x = 207,123 × 207,123
4. Step 4: Simplify right side
   137,110x = 42,899,937,129
5. Step 5: Solve for x
   x = 42,899,937,129/137,110
6. Step 6: Final answer
   x = 312,887.00