Finding the Third Proportional to 361,619,783 and 784,886,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,619,783 : 784,886,721.50 = 784,886,721.50 : x
2. Step 2: Convert to fraction form
   361,619,783/784,886,721.50 = 784,886,721.50/x
3. Step 3: Cross multiply
   361,619,783x = 784,886,721.50 × 784,886,721.50
4. Step 4: Simplify right side
   361,619,783x = 616,047,165,587,018,624
5. Step 5: Solve for x
   x = 616,047,165,587,018,624/361,619,783
6. Step 6: Final answer
   x = 1,703,577,056.75