Finding the Third Proportional to 763,987,261.50 and 1,636,886,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   763,987,261.50 : 1,636,886,758.50 = 1,636,886,758.50 : x
2. Step 2: Convert to fraction form
   763,987,261.50/1,636,886,758.50 = 1,636,886,758.50/x
3. Step 3: Cross multiply
   763,987,261.50x = 1,636,886,758.50 × 1,636,886,758.50
4. Step 4: Simplify right side
   763,987,261.50x = 2,679,398,260,152,637,440
5. Step 5: Solve for x
   x = 2,679,398,260,152,637,440/763,987,261.50
6. Step 6: Final answer
   x = 3,507,124,261.33