Finding the Third Proportional to 141,557 and 308,090

Step by Step Solution

1. Step 1: Write the proportion equation
   141,557 : 308,090 = 308,090 : x
2. Step 2: Convert to fraction form
   141,557/308,090 = 308,090/x
3. Step 3: Cross multiply
   141,557x = 308,090 × 308,090
4. Step 4: Simplify right side
   141,557x = 94,919,448,100
5. Step 5: Solve for x
   x = 94,919,448,100/141,557
6. Step 6: Final answer
   x = 670,538.71