Finding the Third Proportional to 1,721,264 and 3,639,528

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721,264 : 3,639,528 = 3,639,528 : x
2. Step 2: Convert to fraction form
   1,721,264/3,639,528 = 3,639,528/x
3. Step 3: Cross multiply
   1,721,264x = 3,639,528 × 3,639,528
4. Step 4: Simplify right side
   1,721,264x = 13,246,164,062,784
5. Step 5: Solve for x
   x = 13,246,164,062,784/1,721,264
6. Step 6: Final answer
   x = 7,695,602.80