Finding the Third Proportional to 554,526 and 830,558.81

Step by Step Solution

1. Step 1: Write the proportion equation
   554,526 : 830,558.81 = 830,558.81 : x
2. Step 2: Convert to fraction form
   554,526/830,558.81 = 830,558.81/x
3. Step 3: Cross multiply
   554,526x = 830,558.81 × 830,558.81
4. Step 4: Simplify right side
   554,526x = 689,827,941,021.41
5. Step 5: Solve for x
   x = 689,827,941,021.41/554,526
6. Step 6: Final answer
   x = 1,243,995.67