Finding the Third Proportional to 357,308 and 784,606

Step by Step Solution

1. Step 1: Write the proportion equation
   357,308 : 784,606 = 784,606 : x
2. Step 2: Convert to fraction form
   357,308/784,606 = 784,606/x
3. Step 3: Cross multiply
   357,308x = 784,606 × 784,606
4. Step 4: Simplify right side
   357,308x = 615,606,575,236
5. Step 5: Solve for x
   x = 615,606,575,236/357,308
6. Step 6: Final answer
   x = 1,722,901.74