Finding the Third Proportional to 141,912 and 212,888.25

Step by Step Solution

1. Step 1: Write the proportion equation
   141,912 : 212,888.25 = 212,888.25 : x
2. Step 2: Convert to fraction form
   141,912/212,888.25 = 212,888.25/x
3. Step 3: Cross multiply
   141,912x = 212,888.25 × 212,888.25
4. Step 4: Simplify right side
   141,912x = 45,321,406,988.06
5. Step 5: Solve for x
   x = 45,321,406,988.06/141,912
6. Step 6: Final answer
   x = 319,362.75