Finding the Third Proportional to 291,790 and 634,704.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,790 : 634,704.50 = 634,704.50 : x
2. Step 2: Convert to fraction form
   291,790/634,704.50 = 634,704.50/x
3. Step 3: Cross multiply
   291,790x = 634,704.50 × 634,704.50
4. Step 4: Simplify right side
   291,790x = 402,849,802,320.25
5. Step 5: Solve for x
   x = 402,849,802,320.25/291,790
6. Step 6: Final answer
   x = 1,380,615.52