Finding the Third Proportional to 291,201 and 456,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,201 : 456,892.50 = 456,892.50 : x
2. Step 2: Convert to fraction form
   291,201/456,892.50 = 456,892.50/x
3. Step 3: Cross multiply
   291,201x = 456,892.50 × 456,892.50
4. Step 4: Simplify right side
   291,201x = 208,750,756,556.25
5. Step 5: Solve for x
   x = 208,750,756,556.25/291,201
6. Step 6: Final answer
   x = 716,861.40