Finding the Third Proportional to 291,916.50 and 373,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,916.50 : 373,009.50 = 373,009.50 : x
2. Step 2: Convert to fraction form
   291,916.50/373,009.50 = 373,009.50/x
3. Step 3: Cross multiply
   291,916.50x = 373,009.50 × 373,009.50
4. Step 4: Simplify right side
   291,916.50x = 139,136,087,090.25
5. Step 5: Solve for x
   x = 139,136,087,090.25/291,916.50
6. Step 6: Final answer
   x = 476,629.75