Finding the Third Proportional to 721,470 and 1,142,368.50

Step by Step Solution

1. Step 1: Write the proportion equation
   721,470 : 1,142,368.50 = 1,142,368.50 : x
2. Step 2: Convert to fraction form
   721,470/1,142,368.50 = 1,142,368.50/x
3. Step 3: Cross multiply
   721,470x = 1,142,368.50 × 1,142,368.50
4. Step 4: Simplify right side
   721,470x = 1,305,005,789,792.25
5. Step 5: Solve for x
   x = 1,305,005,789,792.25/721,470
6. Step 6: Final answer
   x = 1,808,815.04