Finding the Third Proportional to 291,441 and 437,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,441 : 437,431.50 = 437,431.50 : x
2. Step 2: Convert to fraction form
   291,441/437,431.50 = 437,431.50/x
3. Step 3: Cross multiply
   291,441x = 437,431.50 × 437,431.50
4. Step 4: Simplify right side
   291,441x = 191,346,317,192.25
5. Step 5: Solve for x
   x = 191,346,317,192.25/291,441
6. Step 6: Final answer
   x = 656,552.50