Finding the Third Proportional to 291,199.50 and 445,842

Step by Step Solution

1. Step 1: Write the proportion equation
   291,199.50 : 445,842 = 445,842 : x
2. Step 2: Convert to fraction form
   291,199.50/445,842 = 445,842/x
3. Step 3: Cross multiply
   291,199.50x = 445,842 × 445,842
4. Step 4: Simplify right side
   291,199.50x = 198,775,088,964
5. Step 5: Solve for x
   x = 198,775,088,964/291,199.50
6. Step 6: Final answer
   x = 682,607.93