Finding the Third Proportional to 689,420,131.50 and 1,031,687,541

Step by Step Solution

1. Step 1: Write the proportion equation
   689,420,131.50 : 1,031,687,541 = 1,031,687,541 : x
2. Step 2: Convert to fraction form
   689,420,131.50/1,031,687,541 = 1,031,687,541/x
3. Step 3: Cross multiply
   689,420,131.50x = 1,031,687,541 × 1,031,687,541
4. Step 4: Simplify right side
   689,420,131.50x = 1,064,379,182,254,626,688
5. Step 5: Solve for x
   x = 1,064,379,182,254,626,688/689,420,131.50
6. Step 6: Final answer
   x = 1,543,875,981.60