Finding the Third Proportional to 231,672.50 and 369,991

Step by Step Solution

1. Step 1: Write the proportion equation
   231,672.50 : 369,991 = 369,991 : x
2. Step 2: Convert to fraction form
   231,672.50/369,991 = 369,991/x
3. Step 3: Cross multiply
   231,672.50x = 369,991 × 369,991
4. Step 4: Simplify right side
   231,672.50x = 136,893,340,081
5. Step 5: Solve for x
   x = 136,893,340,081/231,672.50
6. Step 6: Final answer
   x = 590,891.63