Finding the Third Proportional to 291,615 and 456,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,615 : 456,862.50 = 456,862.50 : x
2. Step 2: Convert to fraction form
   291,615/456,862.50 = 456,862.50/x
3. Step 3: Cross multiply
   291,615x = 456,862.50 × 456,862.50
4. Step 4: Simplify right side
   291,615x = 208,723,343,906.25
5. Step 5: Solve for x
   x = 208,723,343,906.25/291,615
6. Step 6: Final answer
   x = 715,749.68