Finding the Third Proportional to 648,581,487 and 1,426,877,886

Step by Step Solution

1. Step 1: Write the proportion equation
   648,581,487 : 1,426,877,886 = 1,426,877,886 : x
2. Step 2: Convert to fraction form
   648,581,487/1,426,877,886 = 1,426,877,886/x
3. Step 3: Cross multiply
   648,581,487x = 1,426,877,886 × 1,426,877,886
4. Step 4: Simplify right side
   648,581,487x = 2,035,980,501,555,828,992
5. Step 5: Solve for x
   x = 2,035,980,501,555,828,992/648,581,487
6. Step 6: Final answer
   x = 3,139,128,301.32